The population of this city ,forty percent of which_____, ______ 15% in the last three years

A．are Germans, has risen by

B．are Germen, has fallen by

C．is Germans, have been increased by

D．is Germen, have been reduced by

男性，27岁，体检时发现心率52次／分，律齐，心电图显示窦性心动过缓，根据运动后心电图有助于初步判断心动过缓是属于生理性还是病理性的动作是（）

A.休息30分钟

B.短时间快速蹲立运动

C.深吸气

D.深呼气

E.左侧卧位